The bones of two medieval royal lions were discovered at the historic fortress.

A unique tribute to the millions of animals who served and died for the British military.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Budapest's Communist-era statues, banished to the suburbs.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

An early 20th-century bullring converted into a modern shopping center.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

This sturdy, circular stronghold served as one of the forts that protected the Venetian Lagoon.

The origins of a large, medieval castle are shrouded in mystery, but now it's a delightful garden.

This small, ancient Roman temple was once a church dedicated to the patron saint of penitents.

This curious, round temple is the oldest still-standing marble building in Rome.

It’s said this crypt was the setting for the tragic finale of the Shakespeare play.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

One of the highest mountain passes in Europe has been ranked among the best driving roads in the world.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

Two stone columns flank the grand Venice square, but there were supposed to be three.